Most of the Russian servicemen sitting in and atop 34 armed personnel carriers that rolled into Bucha on February 27 were ethnic Chechens, according to Ukrainian military leaders and government officials. Bearded and burly, clad in brand new, perfectly fitting uniforms and toting assault rifles, they hoped to whiz through the leafy suburb northwest of Kyiv to enter the Ukrainian capital on the war’s third day. They are known as “Kadyrovtsy” or “Kadyrovites” after their leader, Ramzan Kadyrov, Chechnya’s pro-Kremlin strongman, and their reputation preceded them.
Source: wiktionary